Add oat file generation and tests to build

- Currently builds boot.oat for host and target
  and target oat files for art tests.
- Added cross compilation support via --strip-prefix option to dex2oat
- Reduced output to prevent build log spam (Compiler::verbose_)
- Added image roots for recovering important pointers on image load
- Redid JNI stub creation and made the stub array an image root
- Fixed JNI stub test by making JNI stub array executable
- Fixed JNI UnregisterNative to having it reinstall the JNI stub
- Fixed ARM JNI stub to generate PIC code (with irogers)
- Fixed JniCompiler to generate PIC code (with irogers)
- Fixed FindNativeMethod to handle recursive calls
- Finished checkFieldType to use Object::InstanceOf
- Fixed thread unsafe access to ClassLinker::{dex_files_,dex_caches_}
- Added ResolvedMethod variant for use with Method* for context
- Fixed ImageWriter to call FixupMethod
- Fixed ImageWriter to rewrite JNI stub references
- Improved error reporting on lack of ANDROID_DATA dir or art-cache dir
- Fixed Runtime::Start to InitLibraries before creating thread peer
- Implemented Space::IsCondemned to skip spaces loaded from images
- Implemented artFindInterfaceMethodInCache,
  allowing interface invocation from managed code

Change-Id: I603e97fa0ac44508ae05a2e47c1cdb4481678d7b
diff --git a/src/compiler.h b/src/compiler.h
index 24889e8..958d9ab 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -20,6 +20,14 @@
   // Compile a single Method
   void CompileOne(Method* method);
 
+  void SetVerbose(bool verbose) {
+    verbose_ = verbose;
+  }
+
+  bool IsVerbose() const {
+    return verbose_;
+  }
+
  private:
   // Attempt to resolve all type, methods, fields, and strings
   // referenced from code in the dex file following PathClassLoader
@@ -41,6 +49,8 @@
   JniCompiler jni_compiler_;
   ByteArray* abstract_method_error_stub_;
 
+  bool verbose_;
+
   DISALLOW_COPY_AND_ASSIGN(Compiler);
 };